Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble talking to a part that helps control how fuel is sprayed into the engine on one side of the car. It's like when your phone can't connect to the internet.
The vehicle's engine control module (ECM) is unable to communicate with the high-pressure injector control module for Bank 2, which affects fuel delivery.
P3185 indicates a communication fault between the ECM and the high-pressure injector control module on Bank 2. This can result in improper fuel injection timing and quantity, affecting engine performance.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty high-pressure injector control module
• Wiring issues or poor connections
• ECM software or hardware malfunction
ECM: Engine Control Module
Injector: A device that sprays fuel into the engine's cylinders
• Use an OBD-II scanner to confirm the code.
• Inspect wiring and connections between the ECM and the injector control module.
• Test the injector control module for faults.
• Repair or replace damaged wiring or connectors.
• Replace the high-pressure injector control module if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$300 - $1200
Moderate
• Toyota Prius
• Lexus RX
• Honda Accord Hybrid
• Regularly inspect and maintain vehicle wiring.
• Ensure software updates are applied to the ECM.
• Avoid driving through deep water which can affect electrical components.
Communication Error
• If the Check Engine Light is on, have the vehicle inspected as soon as possible.
• Avoid heavy acceleration until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on electronic components.
This code has been more prevalent in hybrid vehicles due to their complex fuel injection systems.
Moderate – While the vehicle may still be drivable, it can cause poor performance and increased fuel consumption.
Ignoring this code may lead to increased emissions, which could fail emissions testing.
• Engine running
• Vehicle at operating temperature
The high-pressure injector control module is typically located near the engine or integrated into the fuel rail system.
Q: Can I drive with a P3185 code?
A: It's possible, but not recommended as it can lead to poor performance and increased fuel consumption.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to further engine performance issues and potential damage to the fuel injection system.
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